//
// Tests that we can dump collection metadata via getShardVersion()
//
(function() {
'use strict';

var st = new ShardingTest({shards: 2, mongos: 1});

var mongos = st.s0;
var coll = mongos.getCollection("foo.bar");
var admin = mongos.getDB("admin");
var shardAdmin = st.shard0.getDB("admin");

assert.commandWorked(admin.runCommand({enableSharding: coll.getDB() + ""}));
st.ensurePrimaryShard(coll.getDB() + "", st.shard0.shardName);
assert.commandWorked(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}));

assert.commandWorked(shardAdmin.runCommand({getShardVersion: coll + ""}));

// Make sure we have chunks information on the shard after the shard collection call
var result =
    assert.commandWorked(shardAdmin.runCommand({getShardVersion: coll + "", fullMetadata: true}));
printjson(result);
var metadata = result.metadata;

assert.eq(metadata.chunks.length, 1);
assert.eq(metadata.chunks[0][0]._id, MinKey);
assert.eq(metadata.chunks[0][1]._id, MaxKey);
assert.eq(metadata.shardVersion, result.global);

// Make sure a collection with no metadata still returns the metadata field
assert.neq(shardAdmin.runCommand({getShardVersion: coll + "xyz", fullMetadata: true}).metadata,
           undefined);

// Make sure we get multiple chunks after a split and refresh -- splits by themselves do not
// cause the shard to refresh.
assert.commandWorked(admin.runCommand({split: coll + "", middle: {_id: 0}}));
assert.commandWorked(
    st.shard0.getDB('admin').runCommand({_flushRoutingTableCacheUpdates: coll + ""}));

assert.commandWorked(shardAdmin.runCommand({getShardVersion: coll + ""}));
printjson(shardAdmin.runCommand({getShardVersion: coll + "", fullMetadata: true}));

// Make sure we have chunks info
result = shardAdmin.runCommand({getShardVersion: coll + "", fullMetadata: true});
assert.commandWorked(result);
metadata = result.metadata;

assert.eq(metadata.chunks.length, 2);
assert(metadata.chunks[0][0]._id + "" == MinKey + "");
assert(metadata.chunks[0][1]._id == 0);
assert(metadata.chunks[1][0]._id == 0);
assert(metadata.chunks[1][1]._id + "" == MaxKey + "");
assert(tojson(metadata.shardVersion) == tojson(result.global));

st.stop();
})();